ASTROSAT CZTI

Data Quality Report

Orbit 21723

Creation date: 2024-06-27T18:31:36.031117
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_059T01_9000003218_21723cztM0_level2.evt modeM0/AS1A07_059T01_9000003218_21723cztM0_level2_quad_clean.evt
Size (bytes)537,082,560106,133,760
Size512.2 MB 101.2 MB
Events in quadrant A3,716,556689,395
Events in quadrant B3,203,328723,416
Events in quadrant C3,104,599704,738
Events in quadrant D5,811,504654,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154271
B0137521
C0134181
D0217041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63353375.319653%
B6336590.931187%
C6336661.041667%
D633565210.292028%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7420 6336 280 280 3.77% 4.42%
B 7421 6337 7 7 0.09% 0.11%
C 7421 6337 0 0 0.00% 0.00%
D 7420 6336 506 506 6.82% 7.99%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 236 821707 5479.64 749 733 149.8
A 13 254 10292 63.8 749 733 149.8
A 0 226 6420 37.96 749 733 149.8
B 3 64 57094 384.91 778 760 146.4
B 0 197 55089 371.21 778 760 146.4
B 6 36 26006 172.5 778 760 146.4
C 14 238 120694 672.07 762 767 178.4
C 10 23 10185 52.78 762 767 178.4
C 8 208 5370 25.8 762 767 178.4
D 12 235 1366620 7700.84 738 720 177.4
D 1 52 1193245 6723.36 738 720 177.4
D 1 20 169218 949.98 738 720 177.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter